Question

2(u+3v)=w-5u, what is u in terms of v and w

Answer 1

$2(u+3v)=w-5u\\\\ 2u+6v=w-5u\ \ \ |-6v\\\\ 2u=w-5u-6v\ \ \ \ |+5u\\\\ 2u+5u=w-6v\\\\ 7u=w-6v\ \ \ |:7\\\\ u=\frac{w-6v}{7}\\\\Asnwer\ is\ u=\frac{w-6v}{7}.$

Answer 2

$2(u+3v)=w-5u \\\\2 u+6v =w-5u\\\\2u+5u=w-6v\\\\7u=w-6v \ \ :7 \\\\u=\frac{w-6v}{7}$